JONKER JS1C-21 REVELATION EVO
This magnificent South African glider of JONKER company has been chosen to design the racing ship for next seasons GPS triangle sailplane competitions.
The aerodynamic design was entrusted to Franck Aguerre, a talented aeronautical engineer and well known modeler. For this formula 1 of the air, he specially designed a very thin wing airfoil (8% thick), the FAD22.
The fantastic wing has an exclusive system of adaptive twisting. The twist of the wing of the
JS1 evolves according to loads apply to the wings, with the effect to
twist (negative twist) the wing tip at High-G maneuvers. As
a result, in conjunction with the aerodynamic choices made on this
wing, a gain in efficiency in tight turns and better locking of course
in roll and yaw during this type of maneuver.
massive use of carbon and kevlar for the construction of the airframe,
the latest technology and the know-how of the manufacturer provides an
empty weight, ready to fly, truly amazing for a scale sailplane of 7
meters wingspan of... 13kg!
Of course, and to stick to the rules (wing Max load 115g/dm²), the water-ballast located both in the fuselage and the wings allow to raise up the weight to 15.65kg to turn the triangles on top speed when the weather is convenient!
The geometry of the model
has been kept strictly conform to the ultra-modern full-size glider, for a no compromise scale ship.
Cockpit with stuffing and painting
instrument panel. Landing retractable
wheel comes with brakes are installed and ready to work, like the tow
release. A small package hardware and short building instructions are
completing the kit.
We of course also offer the self launchable JS1,
it will come with either the 18" unit standard
or optionally with the 20-22" unit and will require 10-12 cells. It will
take off the ground with ease and give you at least three full height
launches. FES option also available.
Radio requirements are two micro servos for the ailerons,
two for the flaps and two additional micro servos for the airbrakes. Four regular servos
for the elevator, rudder and retract. Additional servos might be installed for aerotow and water ballast.